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Poster: A/V Geek Skip Date: Jan 18, 2003 4:09am
Forum: prelinger Subject: A Question for You... the User.

I'm working on the next batch of films from the Prelinger Archive and I've got a question for you, the archive user.

In the past, the MPEG-2 files have been segmented so that they would fit on a 650MB CD-R. I've been noticing that 700MB CD-Rs are getting more prominent and 650MB CD-Rs are being phased out.

Whenever a MPEG-2 file gets segmented, it's sometimes hard to find a place to cleanly break up the file. Especially, if you are trying to reassemble the parts. My thinking is that it's preferable to keep a file entact whenever possible.

My question is: What if I made the files fit on 700MB CDs? Would that pose a problem for you, the user?

Also, should I even worry about having a file fit on a particular CD size? I know that some of you just watch the films on your computer, have DVD-R drives or convert the files to another format for editing anyhow, so that a segmented MPEG-2 file is more of a pain to deal with.

Your feedback is greatly appreciated.

Skip Elsheimer

This post was modified by AV Geek Skip on 2003-01-18 12:06:53

This post was modified by AV Geek Skip on 2003-01-18 12:09:55

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Poster: phican Date: Jan 18, 2003 3:16pm
Forum: prelinger Subject: Re: A Question for You... the User.

Writing mpegs to a cd is important, if one is to show a group a video, I prefer not to depend on a connection to hold their attention.

When the larger cds became available I tried some, for what ever reason my Win 98/Adaptec CD Creator software would not go past the 650 MB limit. Since the benifit of writing a small percentage larger cd was minimal I never looked into why.

I would prefer staying with the 650 limit until
the DVDs become more common. Probably a year away.

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Poster: Diana Hamilton Date: Jan 18, 2003 10:47pm
Forum: prelinger Subject: Re: Movie segment size

We music fans run into the "where to break" problem with live audio a lot too. Consensus from that realm seems to be that if it's going to take more than 1 disc anyway, don't worry about maximizing the size of chunks. Instead, focus on natural split points (say, scenes or acts for movies).

Even if those splits occur every ~400 MB, don't worry about "wasted" CD space. Discs are cheap enough that people are not going to be bothered much by taking say 2 discs vs. 3, if they have a more natural presentation of the chunks.

Also, at this point <=650MB still provides best flexibility for everyone, as opposed to <=700MB.

This post was modified by hamilton on 2003-01-19 06:47:55

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Poster: A/V Geek Skip Date: Jan 22, 2003 12:51pm
Forum: prelinger Subject: Re: Movie segment size

Based on the feedback, I've been getting I'll be cutting up the films to fit on 650 MB CD-Rs with little to no overlap.

Skip
www.avgeeks.com

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Poster: hogfatter Date: Jan 23, 2003 6:23am
Forum: prelinger Subject: Re: Movie segment size

i would think it best to simply aim for splitting at reel changes. perhaps, if two reels combined are under 650 mb, make two reels one file.

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Poster: A/V Geek Skip Date: Jan 23, 2003 6:27am
Forum: prelinger Subject: Re: Movie segment size

I will definitely do that whenever possible.

Sometimes a 16mm film won't have reel change points, but I tried to pick spots where the scene fades to black or there is a title card with no dialogue.

Skip

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Poster: michael heap Date: Feb 4, 2003 11:12pm
Forum: prelinger Subject: Re: Movie segment size

i wouldnt worry about cd space, the majority of bods that i know dont bother to burn the whole thing anyway, they cut them into chunks and save the stuff they want and bin the rest

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Poster: A/V Geek Skip Date: Jan 18, 2003 11:46pm
Forum: prelinger Subject: Re: Movie segment size

I've been looking for natural breaks with the films, but this issue came up with a film that has fading transitions or dialogue that would be broken up if I segmented the film.

Also it's been suggested that I have some overlap between the files. Is that a consideration?

Thanks for you input.

Skip

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Poster: Diana Hamilton Date: Jan 19, 2003 10:18pm
Forum: prelinger Subject: Re: Movie segment size

suggested that I have some overlap between the files

Hmm, toughie- when reassembling into a whole (say on DVD later), would that make it complicated for folks to have to cut out the duplication parts?

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Poster: Marco Date: Mar 6, 2003 11:20pm
Forum: prelinger Subject: Re: A Question for You... the User.

I love the idea of these files being made available unsegmented, even if the file to 10 GBs. I download directly to the station where I plan to edit the project using Media 100, so file size is not an issue, I'd rather have a higher resolution file. Maybe some files could be made available in high resolution/larger file size in addition to the smaller ones sized for CD?

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Poster: Xander.vdM Date: Feb 7, 2003 6:42am
Forum: prelinger Subject: Re: A Question for You... the User.

I personally only burn on 700MB cds these days, so the <= 700MB proposal would suit me.